Question

the average age of three brothers is 15. if the age pf two brothers is 15years and 12 years , find the age of third brother

Answer 1

Step-by-step explanation:

let the total age of brother be 'y'

let the age of 3 brother be 'x'

ATQ

15=y/3

Total age= 45 years

15+12+x=45

27+x=45

x=18 years

age of the 3 brother is 18 years